Some aspects of changes in the macromolecular structure of coals in relation to thermoplastic properties

The development of coal thermoplasticity during the primary devolatilization region is critical in determining coke structures. The solvent swelling technique was used to study the changes in macromolecular structure of four coals of different rank (902 to 203 in the British Coal classification sche...

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Bibliographic Details
Published inFuel (Guildford) Vol. 74; no. 12; pp. 1780 - 1785
Main Authors Butterfield, Ian M., Thomas, K.Mark
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.12.1995
Elsevier
Subjects
Applied sciences
carbonization
coal
Coal and derived products
Energy
Exact sciences and technology
Fuels
Structure, chemical and physical properties
thermoplasticity
thermoplasticity
coal
carbonization
Gas permeability
Dilatometry
Molecular structure
Thermogravimetric analysis
Coal
Devolatilization
Thermoplasticity
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Summary:The development of coal thermoplasticity during the primary devolatilization region is critical in determining coke structures. The solvent swelling technique was used to study the changes in macromolecular structure of four coals of different rank (902 to 203 in the British Coal classification scheme) during carbonization to temperatures up to 600°C. The results were compared with the thermoplastic characteristics of the coals. The dilatometric and gas permeability properties are discussed in terms of changes in macromolecular structure. The study of the macromolecular structure provides new insight into the development of thermoplasticity and coke structure.
ISSN:0016-2361
1873-7153
DOI:10.1016/0016-2361(95)80008-6